inplace_edit.h

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namespace InPlaceEdit {

    enum {
        KEditAborted = 0,
        KEditTab,
        KEditShiftTab,
        KEditEnter,
        KEditLostFocus,

        KEditMaskReason = 0xFF,
        KEditFlagContentChanged = 0x100,

        KFlagReadOnly       = 1 << 0,
        KFlagMultiLine      = 1 << 1,
        KFlagAlignCenter    = 1 << 2,
        KFlagAlignRight     = 1 << 3,
    };

    HWND Start(HWND p_parentwnd,const RECT & p_rect,bool p_multiline,pfc::rcptr_t<pfc::string_base> p_content,completion_notify_ptr p_notify);

    HWND StartEx(HWND p_parentwnd,const RECT & p_rect,unsigned p_flags,pfc::rcptr_t<pfc::string_base> p_content,completion_notify_ptr p_notify, IUnknown * ACData = NULL, DWORD ACOpts = 0);

    void Start_FromListView(HWND p_listview,unsigned p_item,unsigned p_subitem,unsigned p_linecount,pfc::rcptr_t<pfc::string_base> p_content,completion_notify_ptr p_notify);
    void Start_FromListViewEx(HWND p_listview,unsigned p_item,unsigned p_subitem,unsigned p_linecount,unsigned p_flags,pfc::rcptr_t<pfc::string_base> p_content,completion_notify_ptr p_notify);
    
    bool TableEditAdvance(unsigned & p_item,unsigned & p_column, unsigned p_item_count,unsigned p_column_count, unsigned p_whathappened);
    bool TableEditAdvance_ListView(HWND p_listview,unsigned p_column_base,unsigned & p_item,unsigned & p_column, unsigned p_item_count,unsigned p_column_count, unsigned p_whathappened);


    class CTableEditHelper {
    public:
        void TableEdit_Start(HWND p_listview,unsigned p_item,unsigned p_column,unsigned p_itemcount,unsigned p_columncount,unsigned p_basecolumn,unsigned p_flags = 0) {
            if (m_notify.is_valid() || p_columncount == 0 || p_itemcount == 0 || p_item >= p_itemcount || p_column >= p_columncount) return;
            m_listview = p_listview;
            m_item = p_item;
            m_column = p_column;
            m_itemcount = p_itemcount;
            m_columncount = p_columncount;
            m_basecolumn = p_basecolumn;
            m_flags = p_flags;
            __Start();
        }

        void TableEdit_Abort(bool p_forwardcontent) {
            if (m_notify.is_valid()) {
                m_notify->orphan();
                m_notify.release();

                if (p_forwardcontent && (m_flags & KFlagReadOnly) == 0) {
                    if (m_content.is_valid()) {
                        pfc::string8 temp(*m_content);
                        m_content.release();
                        TableEdit_SetItemText(m_item,m_column,temp);
                    }
                } else {
                    m_content.release();
                }
                SetFocus(NULL);
                TableEdit_Finished();
            }
        }


        bool TableEdit_IsActive() const {
            return m_notify.is_valid();
        }

        virtual bool TableEdit_GetItemText(unsigned p_item,unsigned p_column,pfc::string_base & p_out,unsigned & p_linecount) {
            listview_helper::get_item_text(m_listview,p_item,p_column + m_basecolumn,p_out);
            p_linecount = pfc::is_multiline(p_out) ? 5 : 1;
            return true;
        }
        virtual void TableEdit_SetItemText(unsigned p_item,unsigned p_column,const char * p_text) {
            listview_helper::set_item_text(m_listview,p_item,p_column + m_basecolumn,p_text);
        }

        virtual void TableEdit_Finished() {}

        void on_task_completion(unsigned p_taskid,unsigned p_state) {
            if (p_taskid == KTaskID) {
                m_notify.release();         
                if (m_content.is_valid()) {
                    if (p_state & InPlaceEdit::KEditFlagContentChanged) {
                        TableEdit_SetItemText(m_item,m_column,*m_content);
                    }
                    m_content.release();
                }
                /*if (InPlaceEdit::TableEditAdvance(m_item,m_column,m_itemcount,m_columncount,p_state))*/
                if (TableEdit_OnEditCompleted(m_item,m_column,p_state) &&
                    InPlaceEdit::TableEditAdvance_ListView(m_listview,m_basecolumn,m_item,m_column,m_itemcount,m_columncount,p_state)) {
                    __Start();
                } else {
                    TableEdit_Finished();
                }
            }
        }

        ~CTableEditHelper() {
            if (m_notify.is_valid()) {
                m_notify->orphan();
                m_notify.release();
            }
        }
    protected:
        HWND TableEdit_GetListView() const {return m_listview;}
        //return false to abort
        virtual bool TableEdit_OnEditCompleted(unsigned item,unsigned column,unsigned state) {return true;}
    private:
        void __Start() {
            listview_helper::select_single_item(m_listview,m_item);
            m_content.new_t();
            unsigned linecount = 1;
            if (!TableEdit_GetItemText(m_item,m_column,*m_content,linecount)) return;
            m_notify = completion_notify_create(this,KTaskID);
            InPlaceEdit::Start_FromListViewEx(m_listview,m_item,m_column+m_basecolumn,linecount,m_flags,m_content,m_notify);
        }
        enum {
            KTaskID = 0xc0ffee
        };
        HWND m_listview;
        unsigned m_item,m_column;
        unsigned m_itemcount,m_columncount,m_basecolumn;
        unsigned m_flags;
        pfc::rcptr_t<pfc::string8> m_content;
        service_ptr_t<completion_notify_orphanable> m_notify;
    };

}